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Planetary Science Decadal Survey
Planetary Science Decadal Survey
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NASA Technical Documents
by Wolverton, B. C.; Douglas, Willard L.; Bounds, Keit
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Previously, preliminary data on the ability of a group of common indoor plants to remove organic chemical from indoor air was presented. The group of plants chosen for this study was determined by joint agreement between NASA and the Associated Landscape Contractors of America. The chemicals chosen for study were benzene, trichloroethylene, and formaldehyde. The results show that plants can play a major role in removal of organic chemicals from indoor air.
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Topics: ARTIFICIAL INTELLIGENCE, FUZZY SETS, FUZZY SYSTEMS, NEURAL NETS, SET THEORY, DYNAMICAL SYSTEMS,...
NASA Technical Documents
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Independent Tracking Coordination Program - trigonometric tables for calculating coordinates of satellites
Topics: COORDINATES, TRACKING SYSTEM, TRIGONOMETRY, COORDINATION, MATHEMATICAL TABLES, SATELLITE TRACKING,...
NASA Technical Documents
by Tsiolkovskiy, K. E
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A classical, comprehensive collection of theoretical studies on interplanetary space travel, jet propulsion, and rocket technology is presented. Topics treated are: (1) escape velocity; (2) trajectories; (3) design considerations; (4) fuels; (5) food supplies and spacecraft environment during spaceflight; and (6) the general mechanics of spaceflight.
Topics: COMBUSTION CHAMBERS, EXHAUST GASES, POLLUTION CONTROL, AIR POLLUTION, DESIGN ANALYSIS
NASA Technical Documents
by HOHMANN, WALTE
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THIS WORK (ORIGINALLY PUBLISHED IN 1925) CONTRIBUTES TO RECOGNITION OF THE FEASIBILITY OF SPACE TRAVEL. TREATED ARE PROBLEMS ASSOCIATED WITH LEAVING THE EARTH, RETURN TO EARTH, FREE-SPACE FLIGHT, CIRCUM-NAVIGATION OF CELESTIAL OBJECTS, AND LANDING ON OTHER CELESTIAL OBJECTS.
Topics: DIFFUSION THEORY, REACTIVITY, DIFFUSION, SIMULATORS, SHIELDING
Methane, methanol, glycerol, and hydrocarbons for microbial life support systems on extended space missions, animal links in closed system, use of wastes, and chemical synthesis of food
Topics: HYDROCARBONS, HUMAN WASTES, MICROBIOLOGY, MICROORGANISMS, NUTRIENTS, SPACE MISSIONS, SPACECRAFT...
NASA Technical Documents
by Oberth, H
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A theoretical analysis of the parameters involved in spacecraft design and propulsion and the successful completion of space missions is presented. Various types of rockets and their specialized application are described. The physiological effects of space flight are discussed. The requirements for fuel, specific impulse, and energy considerations are included.
Topics: BOUNDARY LAYER SEPARATION, DIFFUSERS, NONUNIFORM FLOW, SEPARATED FLOW, PRESSURE GRADIENTS, VELOCITY...
Planetary Science Decadal Survey
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Near Earth objects (NEOs) are attractive targets for spacecraft missions with the purpose of obtaining greater insight to the nature of the original bodies from which the terrestrial planets formed, without having to visit the Main Belt itself. Greater knowledge of NEOs directly sheds light on the origin and evolution of the asteroid belt, the formation of planets, and the history of the solar system. This report describes a search for NEOs that would be accessible for missions launching in...
Topics: Asteroids, NASA, Decadal, Trajectory Opportunities, Survey, Near Earth Asteroids, NEOs
NASA Technical Documents
by Braverman, A. S.; Grodko, L. N.; Leykand, M. A.; Mil, M. L.; Nekrasov, A. V
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Rotor aerodynamics in relation to historical and ideal development of helicopters
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Topics: AERODYNAMICS, HELICOPTER DESIGN, HELICOPTERS, HISTORIES, ROTOR AERODYNAMICS, HELICOPTER DESIGN,...
NASA Technical Documents
by Walter, Neil A.; Scialdone, John J
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Outgassing data, derived from tests at 398 K (125 C) for 24 hours in a vacuum as per ASTM E 595-84, have been compiled for numerous materials for spacecraft use. The data presented are the total mass loss (TML) and the collected volatile condensable materials (CVCM). The various materials are compiled by likely usage and alphabetically.
Topics: AMINO ACIDS, VEGETATION GROWTH, POTATOES, SUBSTITUTES, PROTEINS, CALMODULIN
A field study was undertaken to determine the Sociopsychological effects of air traffic noise experienced by residents of areas near small sporting aviation fields. A questionaire was prepared which includes questions on flight restriction measures, on attitudes which moderate annoyance and on comparisons with other noise sources, etc.
Topics: COMPUTER PROGRAMS, MATHEMATICAL MODELS, NONLINEARITY, STRUCTURAL VIBRATION, TIME DEPENDENCE, FINITE...
NASA Technical Documents
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This publication contains extended abstracts of papers presented at the Nineteenth International Laser Radar Conference, held at Annapolis, Maryland, July 6-10, 1998; 260 papers were presented in both oral and poster sessions. The topics of the conference sessions were Aerosol Clouds, Multiple Scattering; Tropospheric Profiling; Stratospheric/Mesospheric Profiling; Wind Profiling; New Lidar Technology and Techniques; Lidar Applications, including Altimetry and Marine; Space and Future Lidar;...
Topics: X-15 AIRCRAFT, PILOT TRAINING, AIRSPEED, AERODYNAMIC CHARACTERISTICS, ANGLE OF ATTACK, LIFT DRAG...
Research studies on development of Thermoelectric Outer Planet Spacecraft /TOPS/ and lunar exploration
Topics: CONFERENCES, HUMAN FACTORS ENGINEERING, REGENERATION (ENGINEERING), SPACECRAFT CABIN ATMOSPHERES,...
NASA Technical Documents
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No abstract available
Topics: BIOLOGY, MAPPING, OCEANOGRAPHY, PROJECT MANAGEMENT, RESEARCH PROJECTS, COST ANALYSIS, ECONOMICS,...
NASA Technical Documents
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This bibliography lists 1,158 reports, articles, and other documents introduced into the NASA scientific and technical information system between January 1, 1988 and June 30, 1988. Its purpose is to provide helpful information to researchers, designers and managers engaged in Space Station technology development and mission design. Coverage includes documents that define major systems and subsystems related to structures and dynamic control, electronics and power supplies, propulsion, and...
Topics: ADA (PROGRAMMING LANGUAGE), RUN TIME (COMPUTERS), SOFTWARE ENGINEERING, ARTIFICIAL INTELLIGENCE,...
Planetary Science Decadal Survey
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The Enceladus Orbiter (EO) mission would explore Saturn's moon Enceladus, investigating the following in order of priority: -The nature of Enceladus's cryovolcanic activity -The internal structure and chemistry of Enceladus -The geology of Enceladus -The interaction of Enceladus with the Saturn system -The surfaces and interiors of Saturn's moons Rhea, Dione and Tethys -Preparation for potential future landing on Enceladus
Topics: Enceladus, NASA, MIssion Concept Study, Decadal
NASA Technical Documents
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AERODYNAMICS AND FLIGHT DYNAMICS OF TURBOJET AIRCRAFT
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Topics: ELECTRIC ARCS, ELECTRICAL RESISTIVITY, HIGH TEMPERATURE AIR, THERMAL CONDUCTIVITY, THERMAL PLASMAS,...
This publication comprises the papers presented at the 1993 Goddard Conference on Space Applications of Artificial Intelligence held at the NASA/Goddard Space Flight Center, Greenbelt, MD on May 10-13, 1993. The purpose of this annual conference is to provide a forum in which current research and development directed at space applications of artificial intelligence can be presented and discussed.
Topics: AEROSPACE SAFETY, SMOKE DETECTORS, AIR FLOW, ATMOSPHERIC PRESSURE, DILUTION, FIRE FIGHTING,...
NASA Technical Documents
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This book is, in essence, sixteen years in the making. First attempted to compile a history of the Soviet space program in 1982 author put together a rough chronology of the main events. A decade later, while living on a couch in a college friend's apartment, he began writing what would be a short history of the Soviet lunar landing program. The first draft was sixty-nine pages long. Late the following year, he decided to expand the topic to handle all early Soviet piloted exploration programs....
Topics: STATISTICAL ANALYSIS, RADIATIVE TRANSFER, SOLAR RADIATION, CLOUD COVER, CLOUDS (METEOROLOGY),...
Planetary Science Decadal Survey
by Steven A. Hauck, II, Douglas A. Eng and George J. Tahu
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The purpose of this study was to determine the feasibility of a landed mission to Mercury. It was conducted by the JHU/APL Space Department in partnership with Marshall Space Flight Center, Glen Research Center, and Steven Hauck from Case Western Reserve University. This was conducted as a concept maturity level (CML) 3 study focusing on feasibility trades and options for concepts with a goal of determining whether such a mission could be accomplished within a Principal Investigator (PI)-led...
Topics: Mercury, Concept Study, NASA, Lander, Mission, Decadal
NASA Technical Documents
by Tomayko, James E
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This book examines the computer systems used in actual spaceflight or in close support of it. Each chapter deals with either a specific program, such as Gemini or Apollo onboard computers, or a closely related set of systems, such as launch processing or mission control. A glossary of computer terms is included.
Topics: BRIGHTNESS, STABILITY, TRAJECTORY ANALYSIS, QUASARS, STATISTICAL ANALYSIS, VARIABILITY, ASYMPTOTIC...
NASA Technical Documents
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Transformation of data into knowledge through conceptual induction has been the focus of our research described in this paper. We have developed a Machine Learning System (MLS) to analyze the rocket engine simulation data. MLS can provide to its users fault analysis, characteristics, and conceptual descriptions of faults, and the relationships of attributes and sensors. All the results are critically important in identifying faults.
Topics: DYNAMIC LOADS, DIMENSIONAL ANALYSIS, FAILURE MODES, LOAD DISTRIBUTION (FORCES), STRAIN...
Microbiological and cytological data from Vostok type spacecraft
Topics: BACTERIA, CULTURE TECHNIQUES, CYTOLOGY, MICROBIOLOGY, VOSTOK SPACECRAFT, CYTOLOGY, MICROBIOLOGY,...
No Abstract Available
Topics: AERONAUTICAL ENGINEERING, METEOROLOGY, RESEARCH AND DEVELOPMENT, DOCUMENTS, INDEXES...
NASA Technical Documents
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Information is presented on the most important features of atmospheric radiation such as the quantitative characteristics of molecular absorption and scattering, spectral and angular distributions, and the three-dimensional structure of shortwave and longwave radiation fields. The model of the structure and composition of the atmosphere is described, and the fundamental optical characteristics of absorption and scattering of radiation by the atmosphere are examined. The principles are studied...
Topics: CHEMICAL ENGINEERING, GELS, INORGANIC COMPOUNDS, COST ANALYSIS, PATENT POLICY, SILICON DIOXIDE
NASA Technical Documents
by Holmes, R. F.; Keller, E. E.; King, C. D
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Catalytic carbon dioxide reduction cartridge for oxygen recovery in life support systems of long term manned space flights
Topics: ISOTOPE SEPARATION, SPACE COMMERCIALIZATION, URANIUM ISOTOPES, ORBITAL WORKSHOPS, PRODUCTION...
NASA Technical Documents
by Fries, Sylvia Dought
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A historical account of NASA's Apollo era engineers is presented. This book is based on interviews that were conducted with fifty-one 'typical' engineers.
Topics: COEFFICIENTS, HYPERBOLAS, IMAGE PROCESSING, MATRICES (MATHEMATICS), PARABOLAS, PARALLELEPIPEDS,...
NASA Technical Documents
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At a May 1981 ''Proseminar in Space History''held at the Smithsonian Institution's National Air and Space Museum (NASM) in Washington, DC, historians came together to consider the state of the discipline of space history. It was an historic occasion. The community of scholars interested in the history of spaceflight was not large; previously, well-meaning but untrained aficionados consumed with artifacts had dominated the field, to the exclusion of the larger context. At a fundamental level,...
Topics: AIRCRAFT ICING, FLIGHT ENVELOPES, TRAINING DEVICES, FLIGHT SIMULATORS, FLIGHT TRAINING,...
NASA Technical Documents
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No Abstract Available
Topics: ENGINE TESTS, NONDESTRUCTIVE TESTS, PERFORMANCE, PROPELLANTS, DEGRADATION, MECHANICAL PROPERTIES
NASA Technical Documents
by Anderson, T. P.; Springer, R. W.; Warder, R. C., Jr
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Physico-chemical diagnostics of plasmas - symposium
Topics: CONFERENCES, DIAGNOSIS, GAS DYNAMICS, PHYSICAL CHEMISTRY, PLASMAS (PHYSICS), CONFERENCE, GAS...
NASA Technical Documents
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Following the return to earth on December 2, 1988, of Orbiter OV-104, Atlantis, it was observed that there was substantial Thermal Protection System (TPS) tile damage present on the lower right fuselage and wing. Damage sites were more numerous than on previous flights and conversely, there was almost no damage present on Atlantis' left side. A review team investigated the cause beginning with a detailed inspection of the Atlantis TPS damage, and a review of related inspection reports to...
Topics: EARTH RESOURCES, HYDROLOGY, IMAGE PROCESSING, MINERAL EXPLORATION, OCEANOGRAPHY, PHOTOMAPPING,...
Planetary Science Decadal Survey
by John Spencer
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Titan is a high priority for exploration, as recommended by NASA's 2006 Solar System Exploration (SSE) Roadmap (NASA 2006), NASA's 2003 National Research Council (NRC) Decadal Survey (NRC Space Studies Board 2003) and ESA's Cosmic Vision Program Themes. Recent revolutionary Cassini-Huygens discoveries have dramatically escalated interest in Titan as the next scientific target in the outer solar system. This study demonstrates that an exciting Titan Saturn System Mission (TSSM) that explores two...
Topics: Titan, Saturn, Titan Saturn System Mission, NASA, Mission Concept Study, Decadal
Tabulations on electron densities and plasma scale heights in topside ionosphere, based on Alouette I observations over American continents
Topics: ALOUETTE PROJECT, ALOUETTE I SATELLITE, IONOSPHERE ELECTRON DENSITY, SCALE HEIGHT, ALOUETTE 1...
NASA Technical Documents
by Leontev, U. N.; Vlasov, V. Z
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Theory based on Vlasov general variational method to analyze beams and plates on elastic foundations
Topics: ELASTIC PROPERTIES, FOUNDATIONS, PROBLEM SOLVING, VARIATIONAL PRINCIPLES, VLASOV EQUATIONS,...
Telemetry and ground support equipment design and developments for Deep Space Network
Topics: FLOW COEFFICIENTS, MOLECULAR FLOW, TURBULENT FLOW, VISCOSITY, TURBULENT BOUNDARY LAYER, VELOCITY...
Apollo optical subsystem and lunar module alignment optical telescope project - Vol. 2, part 1
Topics: CHECKOUT, TELESCOPES, CASSEGRAIN OPTICS, SERVOMECHANISMS
NASA Technical Documents
by NON
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The Bonner Durchmusterung (BD) is a visual survey of stars in the declination zones 89 deg to -01 deg. This volume contains the data for the declination range 89 deg to 30 deg. The survey, completed by Argelander and his assistants in the years 1852-1861, was performed and the stars cataloged by allowing the telescope to drift along the mean declination of each zone and recording the positions and magnitudes of stars crossing the transit line of each field. The goal of the survey was to obtain...
Topics: BOOSTER ROCKET ENGINES, PRODUCTION, PROVING, SCHEDULES, LIQUID PROPELLANT ROCKET ENGINES, PROJECT...
NASA Technical Documents
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NASA has an interest in turbines related primarily to aeronautics and space applications. Airbreathing turbine engines provide jet and turboshaft propulsion, as well as auxiliary power for aircraft. Propellant-driven turbines provide rocket propulsion and auxiliary power for spacecraft. Closed-cycle turbine engines using inert gases, organic fluids, and metal fluids have been studied for providing long-duration electric power for spacecraft. Other applications of interest for turbine engines...
Topics: AIR FLOW, HEATING, LOW SPEED WIND TUNNELS, STRAIN GAGES, VAPORIZERS, DISRUPTING, PRESSURE GAGES,...
NASA Technical Documents
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Unity and origin of australasian tektites
Topics: ORIGINS, TEKTITES, ORIGIN, TEKTITE
NASA Technical Documents
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No Abstract Available
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Topics: ARTIFICIAL SATELLITES, GRAVITATIONAL FIELDS, PLANETARY ROTATION, SATELLITE PERTURBATION, ORBIT...
NASA Technical Documents
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No Abstract Available
Topics: APOLLO PROJECT, COMMAND SERVICE MODULES, LUNAR MODULE, MISSION PLANNING, SPACECRAFT DESIGN, SPACE...
NASA Technical Documents
by Harley, K. G.; Odegard, P. A
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Aerodynamic data from static tests of a two-stage advanced technology fan designed to minimize noise are presented. Fan design conditions include delivery of 209.1kg/sec/sq m (42.85 lbm/sec/sq ft) specific corrected flow at an overall pressure ratio of 1.9 and an adiabatic efficiency of 85.3 percent. The 0.836m (2.74ft) diameter first stage rotor has a hub/tip ratio of 0.4 and 365.8m/sec (1200ft/sec) design tip speed. In addition to the moderate tip speed and pressure rise per stage, other...
Topics: INTERPLANETARY SPACE, STATISTICAL ANALYSIS, SHOCK WAVE PROPAGATION, SOLAR WIND, ECLIPTIC, NUMERICAL...
NASA Technical Documents
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Manual control is discussed in terms of operator modeling, measurement of human response, mental workload, pilot/operator opinion, effects of motion, aircraft displays, supervisory control, automobile driving, and remote manipulation.
Topics: COMPUTER NETWORKS, COMPUTER SYSTEMS DESIGN, COMPUTER SYSTEMS PERFORMANCE, DATA CONVERSION ROUTINES,...
This bibliography lists 526 reports, articles, and other documents introduced into the NASA scientific and technical information system in June, 1989. Subject coverage includes: design, construction and testing of aircraft and aircraft engines; aircraft components, equipment and systems; ground support systems; and theoretical and applied aspects of aerodynamics and general fluid dynamics.
Topics: MANAGEMENT, MANUFACTURING, QUALITY CONTROL, RELIABILITY, RESEARCH MANAGEMENT, ROBOTICS, MANAGEMENT...
Procedures used in determining the energy efficiency and economy of a gasoline-electric hybrid taxi, an electric passenger car, and an electric van are described. Tabular and graphic data show results of driving cycle and constant speed tests, energy distribution to various components, efficiency of the components, and, for the hybrid vehicle, the emissions.
Topics: AIRCRAFT ENGINES, ENERGY CONSERVATION, ENGINE DESIGN, TURBINE ENGINES, AIRCRAFT NOISE, COST...
NASA Technical Documents
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The fifth annual NASA Symposium on VLSI Design had 13 sessions including Radiation Effects, Architectures, Mixed Signal, Design Techniques, Fault Testing, Synthesis, Signal Processing, and other Featured Presentations. The symposium provides insights into developments in VLSI and digital systems which can be used to increase data systems performance. The presentations share insights into next generation advances that will serve as a basis for future VLSI design.
Topics: FREQUENCY ANALYZERS, FREQUENCY MEASUREMENT, GAS PRESSURE, INTERNAL PRESSURE, REMOTE CONTROL, TIRES,...
NASA Technical Documents
by Cox, T. H.; Jertsen, R. K.; Guenther, E., Jr.; Kaufman, S.; Schumann, F. A.; Trushin, J. T
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No Abstract Available
Topics: PERFORMANCE TESTS, QUALITY CONTROL, STRUTS, APOLLO SPACECRAFT, COUCHES, SPACECRAFT COMPONENTS
NASA Technical Documents
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The computer programmer manual for NASTRAN is presented. The subjects discussed are: (1) NASTRAN programming fundamentals, (2) data block and table description, (3) subroutine descriptions, (4) module functional descriptions, (5) NASTRAN-operating systems interfaces, (6) modifications and additions to NASTRAN, and (7) NASTRAN support program.
Topics: CARBON COMPOUNDS, MOLECULAR WEIGHT, PERFLUORO COMPOUNDS, POLYETHER RESINS, ELASTOMERS, FLEXIBILITY,...
No Abstract Available
Topics: BEND TESTS, VAPOR DEPOSITION, CERAMICS, DUCTILITY, MAGNESIUM OXIDES, POLYCRYSTALS, SODIUM...
NASA Technical Documents
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Issues of flight deck automation are multifaceted and complex. The rapid introduction of advanced computer-based technology onto the flight deck of transport category aircraft has had considerable impact both on aircraft operations and on the flight crew. As part of NASA's responsibility to facilitate an active exchange of ideas and information among members of the aviation community, a NASA/FAA/Industry workshop devoted to flight deck automation, organized by the Aerospace Human Factors...
Topics: CHARACTERIZATION, ELECTRODES, NICKEL HYDROGEN BATTERIES, SYSTEM EFFECTIVENESS, WEIGHT REDUCTION,...
NASA Technical Documents
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All the basic areas of anthropometry and its applications to the design of clothing, equipment, and workspaces for manned space flight are presented.
Topics: CANCER, NEOPLASMS, RADIOBIOLOGY, TUMORS, CONFERENCES, HYPERTHERMIA, RADIATION THERAPY, RADIO...
No Abstract Available
Topics: APOLLO SPACECRAFT, HEAT TRANSFER, SPACECRAFT CONFIGURATIONS, AERODYNAMIC HEATING, RESEARCH...
NASA Technical Documents
by Batha, D. R.; Campbell, J. G.; Carey, M. D.; Nagy, A. R
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Cooling liquid propellant rocket engine thrust chambers - data & bibliography
Topics: ABLATION, COOLING, LIQUID PROPELLANT ROCKET ENGINES, THRUST, THRUST CHAMBERS, BIBLIOGRAPHY,...
NASA Technical Documents
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Tabulated values of longwave and shortwave radiation fluxes and also cooling and heating rates in the atmosphere for standard atmospheric profiles are presented. The radiation codes used in the Goddard general circulation model were employed for the computations. These results were obtained for an international intercomparison projected called Intercomparison of Radiation Codes in Climate Models (ICRCCM).
Topics: ELECTRON IRRADIATION, POLYMERIC FILMS, RADIATION DOSAGE, SUBSTRATES, THIN PLATES, ELECTRON...
NASA Technical Documents
by Morrison, Gerald L.; Swan, David H
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Flow field measurements are presented of 3 subsonic rectangular cold air jets. The 3 cases presented had aspect ratios of 1 x 2, 1 x 4 at a Mach number of 0.09 and an aspect ratio of 1 x 2 at a Mach number of 0.9. All measurements were made using a 3-D laser Doppler anemoneter system. The presented data includes the mean velocity vector, all Reynolds stress tensor components, turbulent kinetic energy and velocity correlation coefficients. The data is presented in tabular and graphical form. No...
Topics: CRYOGENIC FLUID STORAGE, ORBITAL SERVICING, PROPELLANT MASS RATIO, SPACE TRANSPORTATION SYSTEM,...
This document contains papers presented at the 4th International Conference Exhibition: World Congress on Superconductivity held at the Marriott Orlando World Center, Orlando, Florida, June 27-July 1, 1994. This conference encompassed research, technology, applications, funding, political, and social aspects of superconductivity. Specifically, the areas of research, technology, and development covered during the conference included high-temperature materials, thin films, C-60 based...
Topics: SPACEBORNE EXPERIMENTS, CALORIMETERS, X RAYS, BISMUTH, ENERGY SPECTRA, GERMANATES, GAMMA RAYS,...
NASA Technical Documents
by McBride, Bonnie J.; Gordon, Sanford; Reno, Martin A
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This report is a compilation of thermodynamic functions of 50 elements in their reference state. The functions are: C(sup 0, sub p), H(T)-H(sup 0)(0), S(sup 0)(T), and - G(sup 0)(T) - H(sup 0)(0) for the elements Ag, Al, Ar, B, Ba, Be, Br2, C, Ca, Cd, Cl2, Co, Cr, Cs, Cu, F2, Fe, Ge, H2, He, Hg, I2, K, Kr, Li, Mg, Mn, Mo, N2, Na, Nb, Ne, Ni, O2, P, Pb, Rb, S, Si, Sn, Sr, Th, Th, Ti, U, V, W, Xe, Zn, and Zr. Deuterium D, and electron gas e(sup -) are also included. The data are tabulated as...
Topics: RESEARCH AND DEVELOPMENT, TECHNOLOGY UTILIZATION, TECHNOLOGY TRANSFER, INFORMATION TRANSFER,...
NASA Technical Documents
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No Abstract Available
Topics: COMMUNICATION NETWORKS, RELIABILITY ENGINEERING, TOPOLOGY, FAILURE ANALYSIS, FAULT TREES, GRAPH...
No Abstract Available
Topics: FLUID MANAGEMENT, RETRAINING, SIMULATION, THRUST REVERSAL, VAPORS, GRAVITATIONAL EFFECTS, LIQUID...
NASA Technical Documents
by Brewer, G. D.; Morris, R. E.; Lange, R. H.; Moore, J. W
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The feasibility, practicability, and potential advantages/disadvantages of using liquid hydrogen as fuel in long range, subsonic transport aircraft of advanced design were studied. Both passenger and cargo-type aircraft were investigated. To provide a valid basis for comparison, conventional hydrocarbon (Jet A) fueled aircraft were designed to perform identical missions using the same advanced technology and meeting the same operational constraints. The liquid hydrogen and Jet A fueled aircraft...
Topics: AUSFORMING, AUSTENITIC STAINLESS STEELS, FATIGUE LIFE, FORGING, GEAR TEETH, CRACK INITIATION,...
NASA Technical Documents
by Gezari, Daniel Y.; Schmitz, Marion; Pitts, Patricia S.; Mead, Jaylee M
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The Far Infrared Supplement contains a subset of the data in the full Catalog of Infrared Observations (all observations at wavelengths greater than 4.6 microns). The Catalog of Infrared Observations (CIO), NASA RP-1294, is a compilation of infrared astronomical observational data obtained from an extensive literature search of scientific journals and major astronomical catalogs and surveys. The literature search is complete for years 1965 through 1990 in this Third Edition. The Catalog...
Topics: COMPRESSIBILITY, BOUNDARY CONDITIONS, DIFFERENCE EQUATIONS, EVAPORATION, NONLINEAR FILTERS, SODIUM...
NASA Technical Documents
by BAZOV, D. I
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PRINCIPLES OF HELICOPTER FLIGHT UNDER VARIOUS CONDITIONS ARE REVIEWED, GIVING SPECIAL ATTENTION TO THE OPERATION OF THE MAIN ROTOR. A BRIEF HISTORY OF HELICOPTER DEVELOPMENT IS PRESENTED, TOGETHER WITH A SUMMARY OF THE MAIN COMPONENTS OF A HELICOPTER AND A CLASSIFICATION OF THE VARIOUS TYPES OF HELICOPTERS. THE CHARACTERISTICS OF THE MAIN ROTOR AND ITS OPERATION DURING AUTOROTATION AND DURING AXIAL AND OBLIQUE FLOW ARE CONSIDERED. ALSO CONSIDERED ARE VERTICAL AND HORIZONTAL FLIGHT, ALTITUDE...
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Topics: BALL BEARINGS, FATIGUE TESTS, LUBRICATING OILS, SERVICE LIFE, STEELS, AIRCRAFT ENGINES, HIGH...
No Abstract Available
Topics: AERODYNAMIC CHARACTERISTICS, MACH NUMBER, SWEPTBACK WINGS, AERODYNAMIC CONFIGURATIONS, WIND TUNNEL...
NASA Technical Documents
by Babenko, K. I.; Lyubimov, A. N.; Rusanov, V. V.; Voskresenskiy, G. P
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Nonaxisymmetric three-dimensional flow field of ideal gas about smooth body of revolution
Topics: AXISYMMETRIC FLOW, BODY OF REVOLUTION, FLOW FIELD, IDEAL GAS, THREE-DIMENSIONAL FLOW, BODIES OF...
Computer approach to first order planetary theory using perturbation calculation in rectangular coordinates
Topics: METEOROLOGICAL SATELLITES, RADAR DATA, ROCKET LAUNCHING, TABLES (DATA), ARGENTINA, BRAZIL, GRAPHS...
NASA Technical Documents
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Topics: CHEMICAL PROPERTIES, THERMAL INSULATION, CONVECTIVE HEAT TRANSFER, GLASS COATINGS, MORPHOLOGY,...
NASA Technical Documents
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The purpose of the Conference was to bring together world leaders in aviation safety research, aircraft design and manufacturing, fleet operation and aviation maintenance to disseminate information on current practices and advanced technologies that will assure the continued airworthiness of the aging aircraft in the military and commercial fleets. The Conference included reviews of current industry practices, assessments of future technology requirements, and status of aviation safety...
Topics: ADVANCED MICROWAVE SOUNDING UNIT, THERMAL ANALYSIS, THERMAL STABILITY, STEADY STATE, EARTH...
NASA Technical Documents
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Results of ultraviolet observations of cool, hot, binary, and variable stars; galaxies; the interstellar medium; and the solar system utilizing the International Ultraviolet Explorer are discussed.
Topics: ACCURACY, ERROR ANALYSIS, EVALUATION, IMAGERY, GEOMETRIC RECTIFICATION (IMAGERY), IMAGE RESOLUTION,...
NASA Technical Documents
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This bibliography lists 822 reports, articles and other documents introduced into the NASA Scientific and Technical Information System in 1988. Items are selected and grouped according to their usefulness to the manager as manager. Citations are grouped into ten subject categories: human factors and personnel issues; management theory and techniques; industrial management and manufacturing; robotics and expert systems; computers and information management; research and development; economics,...
Topics: ALGORITHMS, KALMAN FILTERS, LEAST SQUARES METHOD, NAVIGATION, POSITION ERRORS, POWER SPECTRA, RADAR...
NASA Technical Documents
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A temporal adaptive algorithm for the time-integration of the two-dimensional Euler or Navier-Stokes equations is presented. The flow solver involves an upwind flux-split spatial discretization for the convective terms and central differencing for the shear-stress and heat flux terms on an unstructured mesh of triangles. The temporal adaptive algorithm is a time-accurate integration procedure which allows flows with high spatial and temporal gradients to be computed efficiently by advancing...
Topics: COMPUTATIONAL FLUID DYNAMICS, WIND TUNNEL TESTS, COMPUTATIONAL GRIDS, COMPUTER PROGRAMS, FLOW...
Z-function solutions for motion and heating during atmosphere entry from equatorial orbits of rotating planets
Topics: ATMOSPHERIC ENTRY, MOTION, PLANET, REENTRY, Z FUNCTION, EQUATORIAL ORBITS, HEATING, MOTION,...
This two volume publication presents the proceedings of the third through sixth history symposia of the International Academy of Astronautics. Thirty-nine papers are divided into four categories: (1) Early Solid Propellant Rocketry; (2) Rocketry and Astronautics: Concepts, Theory, and Analyses after 1880; (3) The Development of Liquid and Solid Propellant Rockets from 1880 to 1945; and (4) Rocketry and Astronautics after 1945. Categories 1 and 2 will be found in volume 1 and the remainder in...
Topics: ALGORITHMS, LEAST SQUARES METHOD, MATRICES (MATHEMATICS), MATHEMATICAL MODELS, ORTHOGONAL...
NASA Technical Documents
by Wei, F. S.; Weisbrich, A. L
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Rsults provide functional relationship between rotor performance, blade vibratory loads and dual control settings and indicate that multicyclic control produced significant reductions in blade flatwise bending moments and blade root actuator control loads. Higher harmonic terms of servo flap deflection were found to be most pronounced in flatwise bending moment, transmission vertical vibration and pitch link vibratory load equations. The existing test hardware represents a satisfactory...
Topics: AEROSPACE ENGINEERING, SYSTEMS ENGINEERING, MANAGEMENT METHODS, NASA PROGRAMS, RESEARCH AND...
Thermodynamic properties of tungsten, molybdenum, titanium, zirconium, niobium, and tantalum metal and compounds
Topics: MOLYBDENUM, ZIRCONIUM, MOLYBDENUM, NIOBIUM, TANTALUM, THERMODYNAMIC PROPERTY, TITANIUM, TUNGSTEN,...
NASA Technical Documents
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This document presents the postflight trajectory for the Apollo/Saturn 5 AS-506 flight. Included is an analysis of the orbital and powered flight trajectories of the launch vehicle, the free flight trajectories of the expended S-1C and S-2 stages, and the slingshot trajectory of the S-4B/1U. Trajectory dependent parameters are provided in earth-fixed launch site, launch vehicle navigation, and geographic polar coordinate systems. The time history of the trajectory parameters for the launch...
Topics: AEROTHERMODYNAMICS, SPACECRAFT MODULES, SPACECREWS, DESIGN ANALYSIS, ENVIRONMENT EFFECTS, LUNAR...